Air spring for vehicle

Abstract

An air spring for a vehicle may include a piston chamber with a bottom connected with an axle assembly to be able to move up / down, an air chamber with a top fixed to a car body and a bottom seated over a top of the piston chamber to be extendable and contractible by inflow / outflow of air, a piston positioned in the piston chamber, vertically dividing an internal space of the piston chamber into upper and lower internal spaces, and airtightly separating the upper internal space from the lower internal space, and an air control mechanism allowing air to flow into / out of the upper and lower internal spaces of the piston chamber and the internal space of the air chamber so that the piston chamber and the axle assembly are moved up / down with extension / contraction of the air chamber by the inflow / outflow of the air.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]The present application claims priority of Korean Patent Application Number 10-2013-0157913 filed on Dec. 18, 2013, the entire contents of which application are incorporated herein for all purposes by this reference.BACKGROUND OF INVENTION[0002]1. Field of Invention[0003]The present invention relates to an air spring for a vehicle, and more particularly, to an air spring for a vehicle which simultaneously performs the functions of shock-absorbing and vertical movement of a pusher system.[0004]2. Description of Related Art[0005]Freight cars such as trucks may be additionally equipped with pusher and tag systems on the rear wheel shaft to increase the load of freight.[0006]FIG. 1 is a view showing the structure of a pusher system according to the related art. Referring to FIG. 1, the pusher system includes ride air springs 3 between the car body 2 and the axle 1 to absorb shock and clamp beams 4 that are held by the ride air springs 3 and su...

AI Technical Summary

Benefits of technology

The patent text describes a pusher system that can both lift and absorb shocks simultaneously by controlling air in the air chamber and the piston chamber. This integrated design eliminates the need for separate air springs, reducing manufacturing costs and weight. The technical effect is a simplified and cost-effective pusher system with improved lifting and shock absorption capabilities.

Problems solved by technology

The pusher system of the related art, however, has a problem in that since the ride air springs for shock-absorbing in traveling and the lift air springs for lifting and descending the axles are separately mounted, the structure of a vehicle is complicated and the number of parts increases, and therefore the manufacturing cost and the weight are increased.

However, this system also has a problem that the manufacturing cost and the weight are increased, because ride air springs and lift air springs are separately mounted.

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